CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 76,508	$ 81,451	$ 45,557	$ 147,423
Unrealized gains on investment securities available for sale:
Net unrealized holding gain (loss) arising during the period	188,405	23,326	(24,755)	44,943
Reclassification adjustment for net securities gains realized in income	(4,264)	(2,877)	(5,404)	(6,050)
Net change in unrealized gain (loss) on securities available for sale	184,141	20,449	(30,159)	38,893
Unrealized losses on derivative instruments:
Net unrealized holding loss arising during the period	(11,070)	(37,218)	(91,884)	(57,893)
Reclassification adjustment for net (gains) losses realized in income	7,502	(1,241)	10,851	(3,242)
Net change in unrealized losses on derivative instruments	(3,568)	(38,459)	(81,033)	(61,135)
Other comprehensive income (loss)	180,573	(18,010)	(111,192)	(22,242)
Comprehensive income (loss)	$ 257,081	$ 63,441	$ (65,635)	$ 125,181

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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